My json Object is dynamic, there may be arounf 10 -15 types of dynamic json response i will get,
EX: {"a": "B"}, {"a": [a, c, d]}, {a:b, d: []}, {a: []}, {a: [], b:[]}
these are possible types i have define.
//Before writing the below line, I have to identify the response belongs
to the correct Class Type and Convert the response into the corosponding Java Class.
A aResponse = mapper.convertValue(jsonResponse(), A.class );
Based on my above code the response always consider to take A.class and will throw an exception.
How can i identify the response belongs to specifc class, and convert it?
You can use a custom deserializer for this:
public class Test {
public static void main(String[] args) throws Exception {
ObjectMapper mapper = new ObjectMapper();
final SimpleModule module = new SimpleModule("configModule", Version.unknownVersion());
module.addDeserializer(Root.class, new DeSerializer());
mapper.registerModule(module);
Root readValue = mapper.readValue(<json source>);
}
}
class DeSerializer extends StdDeserializer<Root> {
protected DeSerializer() {
super(Root.class);
}
@Override
public Root deserialize(JsonParser p, DeserializationContext ctxt) throws Exception {
// use p.getText() and p.nextToken to navigate through the json, conditionally check the tags and parse them to different objects and then construct Root object
return new Root();
}
}
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